Annual report pursuant to Section 13 and 15(d)

Investment in RealD (Details Textual)

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Investment in RealD (Details Textual) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Investment in Marketable Securities - Real D (Textual) [Abstract]      
Exercise price of options $ 0.00667    
Number of options to purchase common stock   1,085,828  
Additional options earned to purchase common stock of RealD 136,952    
Approximate increase in investment in RealD and its deferred lease incentive liability $ 3,402    
Number of shares owned in RealD 1,222,780    
Estimated fair value of company owned shares in RealD 9,709 27,993  
Unrealized holding loss 21,694    
Cumulative net unrealized holding losses from accumulated other comprehensive income (loss) to earnings 12,610    
Investment in Real D [Member]
     
Investments in and Advances to Affiliates [Line Items]      
Investment in RealD through options 3,402 18,909  
Investment in Marketable Securities - Real D (Textual) [Abstract]      
Estimated fair value of company owned shares in RealD $ 9,709 $ 27,993 $ 0